Wednesday, June 26, 2013

Yellowstone

I chose Yellowstone for my
project on the USA
and I made a Power Point presentation and a talk. I chose Yellowstone because
it was interesting.

I found out about a lot of
new things. For example the park is called Yellowstone because of the YellowstoneLake. I also found out about what a
caldera is and how many earthquakes there are a year. A caldera is a lake on a volcano which
is created when an empty magma chamber collapses. With time the collapsed
chamber will be filled up with water. In Yellowstone there are about 3000
earthquakes a year. The last three super eruptions were 2,1 mio. 1,2 mio. and
640.000 mio. years ago.